Noisy tramsmission on dex410r

[richardh]

Hi, have just recently acquired a dex410r after a long lay off from touring cars - my last race was in a tc3. Have all built and nearly ready to go, but now that i've got the motor and pinion in place it sounds very rough! The transmission was lovely and free right up to the point I dropped the motor and pinion in. The pinion is from my old days racing the tc3 and is 48dp. It sounds like a really bad mesh, but no matter how much I work at it I can't get it any better! Any help on this would be gratefully appreciated, I'm pretty keen to get racing, the dex seems a well thought
out car.